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118 lines
3.4 KiB
C#
118 lines
3.4 KiB
C#
/******************************************************************************/
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/*
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Project - MudBun
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Publisher - Long Bunny Labs
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http://LongBunnyLabs.com
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Author - Ming-Lun "Allen" Chou
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http://AllenChou.net
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*/
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/******************************************************************************/
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using System.Collections.Generic;
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using Unity.Collections;
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using UnityEngine;
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#if MUDBUN_BURST
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using Unity.Burst;
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using Unity.Mathematics;
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using AOT;
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#endif
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namespace MudBun
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{
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#if MUDBUN_BURST
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[BurstCompile]
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#endif
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public class CustomDistortion : MudDistortion
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{
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// this value matches kCustomDistortion in CustomBrush.cginc
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public static readonly int TypeId = 901;
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[SerializeField] private float m_cellSize = 0.25f;
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public float CellSize { get => m_cellSize; set { m_cellSize = value; MarkDirty(); } }
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[SerializeField] [Range(1.0f, 10.0f)] private float m_strength = 5.0f;
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public float Strength { get => m_strength; set { m_strength = value; MarkDirty(); } }
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[SerializeField] [Range(0.0f, 1.0f)] private float m_fade = 1.0f;
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public float Fade { get => m_fade; set { m_fade = value; MarkDirty(); } }
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public override float MaxDistortion => CellSize;
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public override Aabb RawBoundsRs
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{
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get
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{
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Vector3 posRs = PointRs(transform.position);
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Vector3 r = 0.5f * VectorUtil.Abs(transform.localScale) + (m_fade + m_cellSize) * Vector3.one;
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Aabb bounds = new Aabb(-r, r);
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bounds.Rotate(RotationRs(transform.rotation));
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bounds.Min += posRs;
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bounds.Max += posRs;
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return bounds;
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}
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}
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public override void SanitizeParameters()
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{
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base.SanitizeParameters();
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Validate.AtLeast(1e-2f, ref m_cellSize);
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Validate.AtLeast(1.0f, ref m_strength);
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Validate.NonNegative(ref m_fade);
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}
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public override int FillComputeData(NativeArray<SdfBrush> aBrush, int iStart, List<Transform> aBone)
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{
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SdfBrush brush = SdfBrush.New();
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brush.Type = TypeId;
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brush.Data0.x = m_cellSize;
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brush.Data0.y = m_strength;
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brush.Data0.z = m_fade * m_cellSize;
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aBrush[iStart] = brush;
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return 1;
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}
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#if MUDBUN_BURST
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[BurstCompile]
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[MonoPInvokeCallback(typeof(Sdf.SdfBrushEvalFunc))]
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[RegisterSdfBrushEvalFunc(901)]
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public static unsafe float EvaluateSdf(float res, ref float3 p, in float3 pRel, SdfBrush* aBrush, int iBrush)
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{
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float3 h = math.abs(0.5f * aBrush[iBrush].Size);
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float cellSize = aBrush[iBrush].Data0.x;
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float fade = aBrush[iBrush].Data0.z;
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float d = Sdf.Box(pRel, h, fade * cellSize);
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if (d > 0.0f)
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return res;
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float strength = aBrush[iBrush].Data0.y;
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float3 r = p / cellSize;
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float3 f = math.floor(r);
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float3 t = r - f;
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float3 q = (f + math.smoothstep(0.0f, 1.0f, math.max(1.0f, strength) * (t - 0.5f) + 0.5f)) * cellSize;
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p = math.lerp(p, q, math.saturate(strength) * math.saturate(-d / math.max(MathUtil.Epsilon, fade * cellSize)));
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return res;
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}
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#endif
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public override void DrawSelectionGizmosRs()
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{
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base.DrawSelectionGizmosRs();
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GizmosUtil.DrawInvisibleBox(PointRs(transform.position), transform.localScale, RotationRs(transform.rotation));
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}
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public override void DrawOutlineGizmosRs()
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{
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base.DrawOutlineGizmosRs();
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GizmosUtil.DrawWireBox(PointRs(transform.position), transform.localScale, RotationRs(transform.rotation));
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}
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}
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}
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